Fedora 15 x86_64 : Skype sound issue.

After installing Skype on Fedora 15 x86_64 there is no sound.
Install the following packages and restart Skype.

# yum install libv4l.i686

# yum install alsa-plugins-pulseaudio.i686

# yum install pulseaudio-libs.i686

Fedora 15 : Installing Gnome Shell Extensions

# yum search gnome-shell-extension
Loaded plugins: langpacks, presto, refresh-packagekit
==== N/S Matched: gnome-shell-extension =================
gnome-shell-extension-cpu-temperature.noarch : A gnome-shell extension to show the current temperature of CPU
gnome-shell-extension-icon-manager.noarch : A gnome-shell extension to manage icons in top bar
gnome-shell-extension-mediaplayers.noarch : A gnome-shell extension to control mediaplayers
gnome-shell-extension-noim.noarch : A gnome-shell extension for removing the name and the IM status
gnome-shell-extension-noripple.noarch : A gnome-shell extension to disable hot corner ripple effects
gnome-shell-extension-pidgin.x86_64 : The components necessary to integrate Pidgin with GNOME Shell
gnome-shell-extension-pomodoro.noarch : A gnome-shell extension for the pomodoro technique
gnome-shell-extension-presentation-mode.noarch : A gnome-shell extension to control the screen saver
gnome-shell-extension-remove-accessibility-icon.noarch : A gnome-shell
     ...: extensions for removing the accessibility icon
gnome-shell-extension-remove-bluetooth-icon.noarch : A gnome-shell extension for removing the bluetooth icon
gnome-shell-extension-remove-volume-icon.noarch : A gnome-shell extension for removing the volume icon
gnome-shell-extension-theme-selector.noarch : Gnome shell user theme selector
gnome-shell-extension-workspacesmenu.noarch : A gnome-shell extension for fast switching work spaces
gnome-shell-extensions-alternate-tab.noarch : Classic Alt+Tab behavior. Window based instead of app based
gnome-shell-extensions-alternative-status-menu.noarch : For those who want a power off item visible at all the time
gnome-shell-extensions-auto-move-windows.noarch : Assign specific workspaces to applications
gnome-shell-extensions-common.noarch : Files common to GNOME Shell Extensions
gnome-shell-extensions-dock.noarch : Shows a dock-style task switcher permanently
gnome-shell-extensions-drive-menu.noarch : Disk device manager in the system status area
gnome-shell-extensions-native-window-placement.noarch : Arrange windows in overview in a more native way
gnome-shell-extensions-places-menu.noarch : Places menu indicator in the system status area
gnome-shell-extensions-user-theme.noarch : Lets the user select a custom theme for the shell
gnome-shell-extensions-windowsNavigator.noarch : Keyboard selection of windows and work-spaces in overlay mode
ibus-gnome3.x86_64 : IBus gnome-shell-extension for GNOME3

Display extension info:

# yum info [extension-name]

Install required extension:

# yum install [extension-name]

Example:
# yum info gnome-shell-extensions-alternative-status-menu.noarch
# yum install gnome-shell-extensions-alternative-status-menu.noarch

Fedora 15 on Acer Aspire 5742 : Wireless Broadcom BCM43225 802.11b/g/n

$ lspci | grep -i broadcom
01:00.0 Ethernet controller: Broadcom Corporation NetLink BCM57780 Gigabit Ethernet PCIe (rev 01)
02:00.0 Network controller: Broadcom Corporation BCM43225 802.11b/g/n (rev 01)

$ uname -a
Linux aspire.localdomain 2.6.38.8-35.fc15.x86_64 #1 SMP Wed Jul 6 13:58:54 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

Go to http://rpmfusion.org/ and search for broadcom-wl and kmod-wl.
Downloads RPMs and install.

# rpm -ivh broadcom-wl-5.60.48.36-1.fc13.noarch
# rpm -ivh kmod-wl-5.60.48.36-2.fc15.1.x86_64
# rpm -ivh kmod-wl-2.6.38.8-35.fc15.x86_64-5.60.48.36-2.fc15.5.x86_64

# /sbin/reboot

$ rpm -qa | grep kmod
kmod-wl-2.6.38.6-26.rc1.fc15.x86_64-5.60.48.36-2.fc15.1.x86_64
kmod-wl-2.6.38.8-35.fc15.x86_64-5.60.48.36-2.fc15.5.x86_64
kmod-wl-5.60.48.36-2.fc15.1.x86_64

$ iwconfig
eth0      IEEE 802.11  Nickname:""
          Access Point: Not-Associated  
          Link Quality:5  Signal level:209  Noise level:160
          Rx invalid nwid:0  invalid crypt:0  invalid misc:0

Fedora 15 on Acer Aspire 5742 : Display Brightness (backlight)

# cd /boot/grub
# cp grub.conf grub.conf.orig
# vim grub.conf

Modify the kernel line by adding acpi_backlight=vendor acpi_osi=Linux at the end.

title Fedora (2.6.38.8-35.fc15.x86_64)
    root (hd0,2)
    kernel /vmlinuz-2.6.38.8-35.fc15.x86_64 ro root=/dev/mapper/vg_aspire-lv_root rd_LUKS_UUID=luks-5dbe04ae-e4be-4eca-848b-bba399c312df rd_LVM_LV=vg_aspire/lv_root rd_LVM_LV=vg_aspire/lv_swap rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYTABLE=uk rhgb quiet acpi_backlight=vendor acpi_osi=Linux
    initrd /initramfs-2.6.38.8-35.fc15.x86_64.img

# /sbin/reboot